South Park: Season 6, Episode 8 - ProjectFreeTV

6 - 8: Red Hot Catholic Love

A retreat is being held for Catholic children, but the parents, concerned about priests molesting their children, won't let them go. The parents decide to abandon their religion and become Atheists. Meanwhile, Cartman thinks that if you eat from your butt, you will crap out your mouth, and puts his theory to the test.